Watchman&#39;s tour system and tour station



May 23, 1950 E. A. scHAcHxNGER 2,508,425

WATCHMANS TOUR SYSTEM AND TOUR STATION Filed DeC. 24, 1947 4Sheets-Sheet l oKaum/6 .sm/wu [l #4:. 55g 49 J4 J INVENTOR.

Edward 'faflzzn er BY CIM May 23, 1950 E. A. scHAcHlNGER 2,508,425

- wATcHMANs TOUR SYSTEM AND TOUR STATION' Filed Deo. 24, 1947 4sheets-sheet 2 IAAIA I PH-H INVENTO Eduard Wulf/1m r ATTORNEYS E. A.SCHACHINGER y WATCHMANS TOUR SYSTEM AND TOUR STATION May 23, 195o 4Sheets-Sheet` 3' Filed Dec.

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agli/lag May 23, 1950 wATcl-mms TOUR SYSTEM AND TOUR STATION Filed Dec.24, 1947 4 Sheets-Sheet 4 lil ff KZ 7' g d d t INVENTOR.

al uur 17 alzar/mfg Patented May 23, 1950 WATCHMANS TOUR SYSTEM AND TOURSTATION Edward A. Schachinger, New York, N. Y.

Application December 24, 1947, Serial No. 793,679

30 Claims.

This invention relates to a watchmans tour system and to apparatus anddevices utilized therein. The invention more particularly relates to awatchmans tour system utilizing tour stations of particularconstructions for attaining the primary purpose of insuring that thewatchman properly completes his tour and in each tour operates the tourStations in succession in a predetermined order.

In my prior Patent 2,376,389, reissued April 8, 1947, Re. 22,864, isdisclosed a Watchmans tour system `utilizing a plurality of tourstations, the construction of the tour stations designated in the patentas preliminary stations and of the system being such that when all rofthe tour stations are properly actuated in a predetermined relation toeach other a routine signal is transmitted upon operation of atransmitting station. The operation of any preliminary station in otherthan the predetermined manner produces an alarm signal.

In the patent it is suggested that, with the exception of certain dummystations, combination changing locks may be used in the preliminarystations which require for the successive operations of each station adifferent key and it is proposed to provide all of these stations withlocks of the same type. As the Watchman proceeds on his tour with agiven key, therefore, he may operate in succession the locks of all ofthe stations, changing the combination thereof from a given combinationto the succeeding combination. In the succeeding tours, the Watchmanrequires for all of the preliminaryf stations keys respectivelycorresponding to the succeeding combinations in order to operate thelocks of the preliminary stations. A series of keys for this purpose, ofcourse, may be controlled by a supervisor to insure that the Watchmanutilizes the proper keys for the respective tours. The patent alsodiscloses a construction for the preliminary station which provides akey channel for releasing a key contained therein upon operation of thelock of the preliminary station.

While the system of my prior patent is eii'ective for many purposes andconditions and especially where the routine and alarm signals may begiven in a central station under supervision of a supervisor, it isdesirable for some purposes to provide a simplied system which may beoperated by the Watchman alone. Such a simplified system may include analarm signal which, if desired, may serve to alarm an intruder or, onthe other hand, to notify a supervisor of faulty operation of the systemor the need of assistance for the watchman.

It is an object of the invention to provide a watchmans tour systemhaving tour stations operable by the watchman of such construction andarrangement that he must make his tour of these stations in apredetermined order.

It is another object of the invention to provide in such a system atransmitting station which may be operated only after the completion ofthe tour of the tour stations has been properly carried out.

It is a further object of the invention to provide a watchmans toursystem in which the watchman is required to make his tour of thestations in a predetermined order and in which upon proper operation ofthe system and completion of the tour in the predetermined order aroutine signal is produced, improper operation thereof producing analarm signal.

It is a still further object of the invention to provide a watchmanssystem having a plurality of tour stations constructed with locks of thecombination changing type to establish a predetermined sequence, meansbeing provided in the system which enables the Watchman to secure forthe successive stations and subsequent tours the proper key foroperation of the tour station locks.

It is an additional object of the invention to provide a Watchmans toursystem in which a transmitting station is utilized which is providedWith a combination changing lock, the proper keys in succession beingmade available to the watchman for operation of this transmittingstation by proper operation of the tour stations in succession, thusrequiring that the Watchman visit the tour stations in a predeterminedorder.

It is another object of the invention to provide a tour station ofparticular construction for a system capable of attaining the aboveobjects of the invention.

It is a further object of the invention to provid a key magazine for asystem utilizing combination changing locks which may serve as a tourstation and Which is operable by the watchman to secure the proper keyof a set of keys for the successive operations of the locks.

It is an additional object of the invention to provide in the tourstations, the transmitting station and the magazine constructions forinsuring against improper operation thereof and against tampering byintruders or unauthorizedV persons and to insure that the watchman shalloperate the system in the desired order and the desired manner.

In its broad aspect the system of the invention utilizes at least onetour station and preferfor operating the transmitting station lock. Thismeans is actuatable by a key -o'f this set of keys to release theretained key.

Preferably the tour station is :constructed with .y

a key trap or channel which is yadapted to receive a key of the set ofkeys for the transmitting fsta-V Y ondrkey but means are provided whichcooperate with the retaining means and With the means actuated by 'the'inserted key for eiecting release of the retained key only 'when thesecond key has been 'inserted in the channel and, as wen, the stationhas been properly operated by the watchman. 'It will be understood thatthe preferred construction of the tour station is such that,regardles's'o'f the order in which 'the Watch-v man carries but thesequence of steps in the operation of the 't'nirV station, he isrequired both to 'insert in the key channel a key oi the set oftransmission station keys, preferably a key 'from 'the immediatelypreviously loperated tour stamitting station lock thereby is changed, itis necessary that the Watchman have in hand at the completion of each ofthe successive tours the proper key for operation of the transmittingstation lock which will effect the concomitant change of the combinationthereof. This the linvention vaccon'rplishes and the fvlatchman is:required to'visit the tour stations .in the proper order in order thathe shall have in hand the proper key for operation of the transmittingstation when he reaches this station in his tour.

Although the provision of tour stations con- "structed with a keychannel and retaining means tion, and then toY operate the tour Ystationwhich -inay'hbe accomplished by a key or other suitable means. Only bycompleting these cooperating steps can the watchman secure from 'the'keychannel the retained key for insertion in the key channel of 'the .nextsucceeding station of the tour. Bycarrying out the operation of theseveral tour stations in succession With the se, guential insertion ofthe vkey from a preceding station inthe channel 'of the station beingoperated't'he watchman progresses to the last tour station beforereaching the transmitting or final station and there receives from thekey rchannel the proper key for operating the transmitting station.

` As willbe more fully understood from the description Vto 'followo'f'the specific embodiments of the system of the invention inconnectionv with the drawings, at the completion of'each tour theWatchman will have invhand a diierent transmitting 'station key, thatis, the adjacent keyi in the' orderV of 'the keys of the set, to thatwhich he had .in hand at the vcompletion of thev previous tour. Upon thecompletion, however, of a number o'f'tours determined by the number oftour stations associated With a transmitting' station, the watchmanagain will have in hand the same key with which he initially started thesuccession of tours. Since, as has been indicated above, at thecompletion of each tour the transmitting station lock is operated totransmit a signal or to make a record or for ether purpose and thecombination of the trans-1.

fof this type itself is sufcient to insure the proper completion of thetour by the watchman for the purpose 'of securing the correct key foroperating the transmitting station and to change the conibination of thelock thereof, it is preferable to combine with the key .channel andretaining means a lock operable lina forward and reverse movement whichrequires a 'particular key'ior its operation and the cooperation oi thekey inserted in the key channel in Vorder Vto obtain re- Alease ofY thekey for operating the subsequent tour station. 'The Iprovision .of tourstations of this construction affords a double insurance that 'the 'keyso'f the set oi keys .for .operating the transmitting stationwill'bemaintained in the .proper order and 'thatt'he proper key will be,available at'the end df each of the successive tours vlfor operatingthe transmitting station.

In one aspect off the invention the locks of the tour stations are ofthe combination changing type which are operable by a supplemental @setof keys which may be different from that which is Yadapted to operatethe transmitting station lock. In'one embodiment of the invention in"this aspect the locks of allof the tour stations may be alike and theymay rloe set to the same combination at the `start of an initial tour.IThe Watchman, therefore, will carry with him a key which will changethe combination `from the set combination to the next'succeedingcombination and vvill rso operate the locks at each of "they tourstations. lUpon completion of the tour, therefore, he will have changedthe combination of all Vof the locks to the next succeeding combination'which willrequire a different key for the operation of these'locks inthe next tour.

While rthe set o'f keys, for operating the tour station looks may beunder control of .a super- 'visor from whom the watchman may .obtain thenext key, preferably .in vaccordance with this aspect oi" the inventionat ,a predetermined point withV respect to the .series of tour Ystationsand the` transmitting station means are kprovided for containing thissupplemental" set of keys. This containing means mayV take. the form ofa magagine which -is capable `of .containing as a series all except oneof theV Vset of keys and isconstructedso that .upon insertion of .theremaining key of Vthe set, a predetermined `key of the set will beseparated rfrom thejr series lcontained in being suchas to vpreventtampering and improper operation, and insuring that the watchman shallvisit the tour stations in a predetermined order and that he shalloperate the transmitting statiori to transmit a signal or otherwise givean indication ormake a record at the completion of his tour.

In another aspect of the invention, the tour stations are similarlyconstructed, preferably with a lock cooperating with the key retainingmeans, as above generally described, the system in this aspect utilizingaset of keys suitable for operation of a lock having a predeterminednumber of combinations, all of the locks of the tour stations and thetransmitting station being operable by the keys of this set. In thisembodiment, in order to insure that the proper key shall be availablewhen withdrawn from the key channel of each tour station for operationof the lock of the next succeeding tour station and for the voperationof the lock of the transmitting station in its sequence, a keycontaining means or magazine is utilized which is adapted to contain asupplemental set of keys which is the duplicate of the set which, aswill be understood from the above general description, is distributed inthe key channels of the tour stations. By providing the proper number ofsuch magazines in addition to the tour stations and the transmittingstation and the corresponding number of duplicate supplementa sets notonly is the sequence of the keys of the set always maintained forsuccessiveoperation of each lock, both of the tour stations and of thetransmitting station in accordance with the change of the combinationthereof in each operation of the lock, but the condition is insured thatthe watchman has in hand the proper key for the operation of the nexttour station of the tour and, upon completing the tour, the proper keyfor the operation of the transmitting station.

The arrangement of tour stations and the transmitting station inrelation to the magazines may be such that each tour station and thetransmitting station shall have associated therewith a magazine. Theconstruction of these magazines, as will be more fully understood fromthe description thereof in connection with the drawings, preferably issuch that only one key may Ice inserted therein at a time andconcomitantly only one key is separated from the series of keys withinthe magazine and conditioned for withdrawal therefrom. Moreover, themagazine preferably is constructed so that only a key of the set of keyswith which it is associated may be inserted in the magazine foreffecting withdrawal of the predetermined key therefrom. Meanspreferably are provided for insuring against improper operation of themagazine and for locking the magazine against operation except by thewatchman who carries a key for this purpose.

In a further modification of the invention in the aspect thereof whichutilizes only a set of keys for a single set of combinations of a lockand a supplemental set which is a duplicate of this single set of keys,the tour stations may be constituted only by magazines of the type abovegenerally described. In such a modication the number of magazinesrequired, in order that the watchman may obtain at the end of each tourthe proper key for operating the transmitting station to transmit thesignal or otherwise make a record and to change the combination of thelock of this transmitting station, will be equal to the number of keys(combination changes) utilized plus one. It will be understood from themore detailed description to follow of the invention in this furthermodication thereof that upon insertion of a key carried by the watchmanfrom one tour station to another in the magazine of the station at whichhe arrives he will be able to withdraw from the magazine the key whichmay be inserted in the magazine of the next succeeding station toreceive from this magazine the key which may be inserted in thesucceeding magazine. This sequence of insertions or withdrawals of thekeys in the magazines which serve as tour stations continues until thewatchman reaches the transmitting station where he utilizes the keyWithdrawn from the last magazine station to operate the transmittingstation. The key utilized for this purpose then may be carried to thefirst tour station for insertion in the magazine thereof at thebeginning of the second tour, each tour being carried out and completedin the manner described.

The details of the construction of the tour stations and of themagazines and the operation thereof and of the system when it isprovided with signaling devices and signal transmission systems orcircuits and other aspects and features of the invention will be morefully understood from the description to follow taken in connection withthe drawings in which:

Fig. 1 shows diagrammatically the watchmans tour system of the inventionutilizing a simple signaling system.

Fig. 2 shows the system of the invention with a modification of thesignaling system.

Fig. 3 is a vertical section of the preferred form of the tour stationof the invention taken transversely of the axis of the lock.

Fig. 4 is a vertical section taken on line 4--4 of Fig. 3.

Fig. 5 is a vertical section taken on line 5--5 of Fig. 4.

Fig. 6 is a vertical section on line 6-6 of Fig. 5.

Fig. 7 shows a horizontal cross-section of a key magazine.

Fig. 8 shows a perspective View of the key magazine of Fig. 7.

Fig. 9 is a section on line 9 9 of Fig. 7.

Fig. 10 is a section on line Ill-I0 of Fig. 9.

Fig. 11 is a section on line II-II of Fig. 9.

Fig. l2 is a horizontal section on line I2-I2 of Fig. 9.

Fig. 13 is a section similar to that of Fig. 9 showing the positions ofthe keys as a key is inserted in the magazine.

Fig. 14 is a vertical section of a modification of the key magazine ofthe invention.

Fig. 15 is a plan view of the magazine of Fig. 14.

Fig. 16 is a vertical section on line II--I of Fig. 14.

' Fig. 1'7 is a horizontal section on line II-Il of Fig. 14.

Fig. 18 shows diagrammatically a tour system 60 of the inventionutilizing magazines as tour stations.

In Fig. 1 are shown five tour stations I identified as #I, #2, #3, #4,#5. Also in Fig. 1 is shown a transmitting station 3 and a keymagazine 1. It 65 Will be understood that the five tour stations aredistributed about the site in convenient or critical locations in orderto insure that the Watchman visiting them shall traverse the area, to besur veyed. In the embodiment of Fig. 1 all of the 70 ve tour stationsare of the same constructions and of similar appearance and are providedwith key channels as generally described above for retaining, asdiagrammatically shown in Fig. 1, respectively keys III, II, I2, I3 andI4 of a set of 7s six keys. These keys hereinafter will be referred :to'asf"white keys. Y he 'sixth white key 15 not shown in 'the drawing-will be in the hands of `=the=watch1nan, fhaving been Vreceived fromvthe 'tour station #5 Vupon insertion of Vthe `key 1'4. "I-'hese whitekeyswill be vused 4for foperationfo'r" fthe transmitting station 3. Y K

This transmitting station may be constructed 'similarly to thetransmitting 'station disclosed `in 4-Iny prior patent Reu22864'and'may1be provided awith Aa combination changing lock, not rshown vviniFig. 1, operable bythe VVproper white-key, such as the key l5withdrawnfrom tour 'station #5, 'to-change'the combination thereof. Suchoperaftion *of* the lock actuates the vmechanism 'of the transnfiittingVstation Aincluding the code Awheel 11 -to operate contacts 19 connected`in the circuit as shown 'in Fig. 1 in series 'with a routinesigna'lacross a sourceof electrical supply. r'Upon completion of the operationof the transmitting staition 3, the watchman will take this same whitelkey l5 and "proceed to the tour station V#l for the next Vtour.YAtitcur station #|,he will insert 'key l5 in the key channel Jthereofvand upon 'operation of this station will Vbe 'able to 'withdrawIwhitemkey lliV from "the key channel'oi tourstation #L as indicated inTable I. Upon `such withdrawal, `key l5 becomes trapped in 'tour station#I and may not be released therefrom until this station again Yisoperated, 'such operation sweats requiring the insertion of a 4key ofthe -set of 30 White keys lfor operating the transmitting Ystation andin the Aaspect 'of `the invention being described in connectionwith'Fig. 1 "the operation of the lock 29 of station A# Ifby asupplemental `vse't 'of keys inthe manner to be described.

Upon withdrawing White key It from tour station #1, 'thewatchmanproceeds 'to tourstation #2 and ,inserts key lil in the key channel oitour Vstation V#2. Operation .of the lock 'of .tour station #2concomitantly with such insertion of key Il! will condition white keyI'I `retained 'in tour Lstation #2 for withdrawaltherefrom. Upon suchwithdrawal, the watchman proceeds to vtour station #3, inserts key H,operates the lock of this station and effects withdrawal of White" keyl2 therefrom. `Simil'arlyghe `operates in succession tour stations Vand#5, ultimately withdrawing white key I from tour station #5. With keyI4, he then may operate the lock of vthe transmitting station 3 againjto transmit a routine signal, since key f4 wilijbe vthe correct 'keyfor operation of the Ylock of 'the transmitting station in thecombination to which this .lock was operated by Vkey T5, as previouslystated.v 'By operating the lock with `key 'l'fl the combination willbechanged to that correspondingto'` key 13.

"'Yeuow" key which'has just completed tour, i'

. 8 changing A, combination 'in each station from a given combination,`lfor example, that 'requiring key-2t to Avthe y-next combinationrequiring key 25, is inserted in a key magazine to release jthe nextyellowl key :25 for operation 4of all tour stations Tin; the knext 1tourto change "the "combination from that lrequiring -key L25 to 'thesucceedingiccmbination requiring key 24. In each 'succeeding tourt-hecombinations 4are-similarly changed requiring "the succeeding yellowkey kwhich is obtained fromthe magazine, `as more fully described here-'matter'.

vAfter transmitting Ythe routine signal, Ythe watchman then will.take"whte ykey I4 to tour station '#-I Yand insert it in the keychannel fthereof. Upon operation ofthe lock of tour station #il 1in'this second 4 tour, 'he will withdraw white key t5. Proceeding ftotourstation l#1 iheiwilliinsertkey f5 andeconcomitantly with the-operationof the lock of tour station #2 will Withdrawkeyfi'. Ascshownin Table I, this sequence of3stefps willproceed through six toursupo'ncompletion of which'the watchman again will have in hand white key 'i5for operation of theitransmitting station jthe lock of this stationhaving `loeenphanged successively to the six combinationsvforv'fhi'chiitlis constructed, as shown in the next cto last vcolumn ofTable "I. A[Upon voperation of fthe transmitting ,station 3 'by key f5at the end A of lthe sixth tour, the .combination of 'this lock againwill'be .changedto ythat requiring key le `for its `;oper'ation, asabove described. it will be "apparentjrom'thetabulation'in Table I thatthe isequenceo'f the'keys 'ofthe set V'of white keys which are adaptedto operate the lock ofthe 'transmitting station "in 'its Aseveralcombinations 'is Lmaintained and that v'tljlepro'per white key always isavailable at the end of the tour 'for operation jof this transmittingstation lock.

`For the'o'perationof thelocks'ii of the'tour .stations diagrammaticallyVshown in Fig. l, .a separate or supplemental set of six keys 21, "22,"23, f`2i4, 25, '25 is utilized. Five of these keys j'atfa .time areadapted normally tobe retained finseri'es in a magazine 'These keysVhereafter Fwill be kreferred 'to as ithefyellowwkeys. In the particularembodiment jof 'the 'invention being des'crib'ed .in conneetion'withFig.l, the lockslZEl 4dfithetour staticnsare alike and oi'thecombinaltionjchangin'g type and all 'have the sameseries Vf sixcombinations,thus requiring 'only one set of six-keys as thesupplemental set. The sixth key, which is additional to those znormallycontained at any given time Withinthe magazine is carried by .thewatchman who, upon visiting leach station, operates .the vlocki'l.thereof with `the ,yellow key in hand. "Thus, ,at each station in theArespective' tours, .asshown in the right hand column .of Table I, .thecombination Vis .changed to the next combination requiring a differen'tkeyfor the operation of the station in ,thenext tour. Intheright handcolumn these combinations are indicated by the .numerals 26 to21,rcorresponding to-the .key numbers, the l,change inthe combinationVbeing indicated in the 'decreasing order similarly to Vthe order,adopted 'for showing the ,change vin combination of the transmittingstation lock. Thus, the tour station locks 52B will befoperated vby key2E in tour i to change the combination from 26 to .25. Upon completionof this tounthe watchman will insert key 25 in themagazine 4l asshown inFig. 1. By. such insertion, key 25y will be conditioned for withdrawaland thewatc'hmanwill withdraw this 1l key and use it during the nexttour vfor operating the lock 28 of each of the tourA stations #I to #5.Such operation of locks 20 will change the combination of each of theselocks-to the succeeding combination which corresponds to key24. Uponreaching the transmitting station-3 which has the magazine 1associatedtherewith at the end of the second tour, insertion of key 25in the magazine will condition key 24 for Withdrawal therefrom to makethis .'keyavailable for use in from to be available for operation of thelocks in the succeeding tour, that is, the rst tour of the second seriesof tours, which will correspond precisely both as to the whitetransmitting station keys utilized andthe yellow keys for operation oflock 28 `of -the tour stations in a .i

repetition of the sequences which have been explained above.

In Fig. 1y also is shown an auxiliary tour station 28 which may beofthesame construction as the tour stations I. .The purpose ofthe auxiliarystation is to produce an alarm signal whenever this station is operated.The tour station 28 may be provided with a key channel similar to thatof tour stations I for releasably retaining a key 38 therein. lIfhe key38 maybe of such form that it is capable of being inserted in the keywayof the transmitting station lock and may be of the same appearance asthough actually different from the ,white keys I8 to I5 inclusiveelement, as shown in Fig. 1, which may comprise a code Wheel 32 foroperation of contacts 33. The code wheel 32 may be operatively connectedtothe lock, not shown, of the auxiliary station 28, the contacts 33being connected with an alarm signal device across the electric supply.The lock of the tour station 28 may have a keyway for receiving any ofthe yellow keys 2| to 25 inclusive and may be operatively connected tothe code wheel 32 so that this code wheel is operated when the lock ofstation 28 is operated by any of the ,fyellow keys. It will beunderstood, therefore, that when the tour station 28 thus constructedand connected in the circuit with the alarm signal device is operated inprecisely the same manner as any of the tour stations I not only willrelease of the false key 30 be effected but an alarm signal will beproduced which may be immediately observed by a supervisor at thecentral oflice or signal station at which also the routine signal devicemay be located. This will enable the supervisor immediately to informthe watchman that he has improperly operated the succession of tour`stations.

which are distributed in the tour stations. It,

therefore, may be inserted in any of the key channels and may bereleasedV therefrom in the same manner as any of the keys I0 to I5inclusive. Upon release of the key 38 from the tour station 28, if thisstation is operated, the key 38 may be inserted in the nexttouristation, for example, the station #4 in Fig. 1 .to effect releaseof the` key I3. The key I3 then released may be insertedA in the keychannel of the tour station #5 and key I4 may be released upon operationof the lock 28 of this station. As .shown in Table I, this key I4 may beused to operate the transmitting station as if the tour had been carriedout in the normal manner.

The watchman may proceed after operating the transmitting station withkey I4 successively to insert the keys in stations.#l, #2, #3, 28, #4and #5, and he will bev able to complete this tour and operate thetransmitting stationl with -key I3. Key 38, however, at this time willhave progressed to and vbe contained Within tour station #5. Uponcompletion of the next tour at the end of which normally key I2 would bewithdrawn from tour station #5 for operation of the transmittingstation, key 38Will be withdrawn in its place. Even though the key 38 isinsertable in the transmitting station keyway, it is of such form thatit willA not operate the lock of this transmitting station in any ofrthe combinations thereof. It will be understood, therefore, that at thecompletion of this third tour ,the watchman will be unable to transmitthe routine signal and if transmission does not occur within the timeallotted for the tour, such departure from the routine will be observedat the signal station or recorded on a suitable recording instrumentoperated by the signaling device connected to the transmitting station.`

The description above given with Irespect to the auxiliary stationconcerns its operation withf. out having associated therewith atransmitting If, however, an unauthorized person attempts to operate thestations, even though he succeeds in successively inserting andwithdrawing the keys from the tour stations #I, #2 and #3, he will beunable to determine that auxiliary station 28 contains the false key orthat it is provided with an alarm transmitting device. Ii the systemutilizes an auxiliary station 28 without the alarm transmitting device32,33, as explained above, during the course of the successive tours,the false key will progress to the transmitting station but willbe'incapable of operating this station to transmit the routine signal.The absence of this routine signal within the required time assigned fora tour will indicate to the supervisor that the system is not beingproperly operated and that investigation is required. If in theauxiliary station 28 the alarm signal transmitting device 32, 33 isprovided, immediate investigation may be made upon the actuation of thealarm signal device in the supervising ofce. It will be understood thatthe auxiliary station 28 may be located in any relation in the tour tothe other tour stations and to the transmitting station requisite toproduce the indication of improper operation or the alarm afteroperation of a desired number of tour stations or time interval.

It will be understood further that if the watch- A man desires to sendan alarm signal in the case of an emergency, he may do so by operatingthe lock .of auxiliary station 28. In such case, it is not necessary forhim to insert the particular key I2 withdrawn from station #3 in the keychannel of auxiliary station 28. Since the locks 28 of the tour stationsand that of the auxiliary station '28- in the embodiment being describedallA are operated by the same key of the set of yellow keys, theinsertion of the white key in hand in the key channel of station 28 andthe operation of its lock by the yellow key in hand insures operation ofauxiliary station 28 and the sending of the alarm. The normal sequenceof the white keys I8 to I5 inclusive then may be resumed aftertransmitting the alarm signal by again inserting key 38 in station 28 torelease the regular white key inserted for alarm purposes. y

' be located adjacent thenormal transmitting station or elsewhere in thearea surveyed and may 1.1 be provided with a codefwheel 35 and contacts31 'connectedito-thealarni signal' device at the'super; visors oli'ce inparallel. with the alarm 'trans-f m'itting device 32', 332 oiauxiliary-ystation 228. In

' 'order'toindicate to thef'watchmanthat'his alarm signal fromthestation'; especiallyfif adjacent the? transmitting station 3, hasbeenor is being transmitted, a local signal' devicesuch as abell 33? maybe connected in parallel with thealarm signal device for simultaneousoperation. therewith'. 'I-'l1.e-alarmv signal station 35 need not beprovided' with a lieychannel since the sequence of" keys for opera-tionof theI transmitting station Sis accomplished in the tourstationsiitll'to1 #5 inclusivea If desired?, however; thealarm signal?355may4 be combine'zdE in, av single teasing' with: the magazine 'Il'orl thisr magazine may be: combined? with the transmitting station 3 or,further, ai combination ofthese three members 3.; 1i, 351 may b'emade ina single structure. Y

In Fig'.V 2 is lshown a tourv system having five tour" stations #4!7,#42', #43, #44, 115451l corre@ sponding' respectively toV stationsf #Tlfto inelusivev in Fig. 1 andhaving key"channel's:for're leasablyretaining the whiteifkeys l tol i inT thersame manner asd'escribedinlconnecti'on with thertourstations of Fig'` 1f. The watchman' havinglin hand. ata starting time a key I5; the succes* sion'of keys insertedand withdrawn in the keyway: channels of 'stationsitil' to #45'inclusive in Figui?? will be precisely the same asthat set out inVTable: IZ Moreover, the transmitting station M1' will Ybe provided' witha1 combination cl'langi'ngL lock capable ofbei'ng: operated bya setofwhite keys lfil to l5' inclusive inthe same manner as transmittingvstation 3' i'n Fig; 1".

In thisA embodiment alsoi the tour stations #"liflj to #lili inclusiveare provided? with locks5 2li operablebgv. a set oi" yellovv"`keysf 21'tor 26 similarly to the-.locks Min. Fig. 1. The locksf 20" of tourstat-ions #fiz and #'45 and transmitting' station" 4^,.however,arenotshown i'nFig; 2in order'with outl confusion diagrammatibally to`rrepresent' the: routine'V arrd'alarml signal transmitting devicesassociatedwith: these three stations. The sequence of'onerat'onsor'thelockslz', however, in thetour''stz'ti'lionsvr #41| to #@5'inclusive in Fig, 2' maybe' precisely the same as that set out inY theright' hand columnL of' Table I; the combination off' each tour' stationlocls being changed in each tourfrom a given combination'to the nextcombination requiring for the operation oi'these'locks in the succeedingtour a key corresponding tosimi-1.x succeeding combination.

The routine andi alarm signal' transmitting devices associated with tourstationv #45' is generally the same as vthose associated with the normalpreliminary or tour stati'onsasy disclosed in my prior patent Re.221,864. By1 operation of thel'oclr 2U'of' station #45 by a "yellow key,a cam 5t' isf actuated', for examples from the vertic a'I position shownin Fig; 2 90 Ato a horizontal' positionfto' change the contact 53' fromengagenrentfwith contact 55 to'engagernent with contact 5??.Correspondingly the contact Bil-'in the trans'- mitting'station 41; bvoperation of the Iockthereof'with'- a white key to move caml 5l' fromthe yertic'alfposition show-n 90 tothe horizontal nositioinis changedfrom engagement with contacti Si' tog engagement with contact 53'. VAswill be observed by tracing the' circuit from the source of electrical'supply; the routine signal will be energized Ywhen the4 circuit i'sjestablished through the contacts 6i?, 6H of the transmitting station Ywhichare actuated by the code 6T, contacts 5ft.V

63 ofthe transmitting station and through Vconf -t'acts 69T; 1F, oftourstation #42, as well as through the selector switch 13# in theposition shown i'nFi'g; 2; this selector switch makingcontactwit'h theterminals 14, 15, 'I6- To secure; this routine signal the contact'!) of'station #42 must be thus actuated by aV cam 51 when theY cam 5| isrotated 90"" fromL thevertical= position byoperation of the lockf'20'ofstation #42; It thus will be understood that theoperation of 'stations#4 5 and` #i412E to rotate the vcams 51 thereof'A from the, verticalv tothe horizontalA and thereafter the operation of" the1 transmitting'nstation 41. to ro.- t'ate itstca'm- 51 fromthevertical to the horizontalwill produce a routine' signal in the same manner as described in myprior patent. Similarly, opera-tion of-'tour stations #45 and #42, withthe selector switch set as shown in Fig. 3' to move cam 5* from thehorizontal tothe verticalV position withsubsequent operationY of thetransmitting station 41i to move` its cam 5| from horizontal` tovertical, will produce a routine signal. As, many tour stations #411#43; and#44 as is desired may beprovided' simply withgcontacts53, 55, 51which are` shown in Fig. 2 forstation #45.

I-t willbe understood' from a consideration of the system disclosedinthepatent Re. 22,864 that station #4f2'is one; of the stationsdescribed inthe patenti whichA when the selector switch '[3y is in theposition shown in Fig. 2 operates as a normal' station but' which, maybecome a dummy sta-Y tion. Station 49 is another station which, when.selectorA switch 13'is in the, position shown in Fig, 2', is-x a dummystation but which may become anormal station by changing the position ofthe selector'switch 13i so'as to make contact with terminals-16, 17 and1 8. Thus, inthe normal' operation of' the systeml disclosed,` in Fig. 2whenA the. selector switch 13; ist in the position shown, station #42Voperates'asv a normal station in which. onlyr contacts 68;, 6 9, 1I arein circuit. When the. selectorswitch isgmoved to engage terminals 1li,zr1-'and 18; station #4'2becomes aV dummy sta-V tion and station 49becomes a normal station in which contacts 68, 69;, 1l; similar to thoseof' sta-- tion #42 are in circuit'. Y

VIn each` oi"y these stations. #42V and 4 9 contacts. 80 are providedwhich are operated in thenormaL operation of the station by means of thekey in thelocl:Y 20 to move the camr5| from thevertical.. position shownto the horizontal position at, 90 therefrom orV the reverse. When theselector switch T3 is in the positionshown. in Fig. 2, the. stationk 49beingv a dummystation, the contacts 8D of station #42 operatingasanormal. station are ineffective since the circuit therethrough is. openat the terminal 11. The, contacts 8 0. of staf. tionY 49, however,become connected in circuit with the alarm signal device at the centralcnice if' the lock of station 4971's operatedto rotate its cam 5'! from,the vertical position shown in Fie. 2 tothe horizontal position at 90therefrom. This circuit is traced throng.h the alarm sig-nal, conf.tacts'iii'! of station 49, t e1:1nnals 15,14 of switch 73;. contacts 69;'Il of. station #4Z when its camV isoperated to horizontal' -position,contacts 63, 59

of' the transmitting station 41j when its, cam is The dummy stationalsomay be constructed to contain the false key 30 a5 described inconnection with station 28, Fig. 1. Operation of the dummy station by anunauthorized person, therefore, may involve not only the development ofa false sequence by insertion of white key I3 in station 49 to effectwithdrawal of the false key 39 and the subsequent arrival of the falsekey 30 at the transmitting station in a manner 'similar to thatdescribed in connection with Fig. 1, but may produce an alarm signal inthe manner just described. Station 49, like station #42, may beconstructed to be operated by a yellow key of the set of keys utilizedfor operating the locks 29 of the several tour stations and effective tochange the combinations of these locks in each operation thereof. Theshape, size and appearance of stations #42 and 49 may be the same asthose of the other tour stations to prevent an intruder distinguishingtherebetween.

Diagrammatically shown in Fig. 2 is a key magazine 1 containing theseries of keys of the set of yellow keys except the key which is in thehands of the watchman. The construction and operation of the magazine 1may be the same as that described generally in connection with Fig. 1and this magazine may be placed in any suitable place in the tour. Italso may constitute a tour station which will cause the Watchman tovisit a particular location in order to be able to maintain the properkey sequence by insertion and withdrawal of the yellow keys to and fromthe magazine. If desired, the size, shape and appearance of thismagazine may be the same as that of the tour stations and it may beprovided, if desired, with a key channel not intended to be used inwhich an intruder or unauthorized person would be induced to insert awhite key in the same manner as in the normal tour station, thusinterrupting the normal sequence of the white keys for the operation ofthe transmitting station 41.

In Figs. 3, 4, and 6 is shown the construction of the tour station #45of Fig. 2. As above stated, the construction of this tour station may besubstantially the same as that of the tour stations of Fig. l withrespect to the key channel and the means for releasably retaining awhite key and with respect to the cooperation with this retaining meansof the lock 29 operated by a yellow key. As shown in Fig. 3 the tourstation #45 includes the contacts 53, 55, 51 shown diagrammatically inFig. 2, the contact 53 being actuated by the cam 5| to control incooperation with the other tour stations the transmission of a routinesignal or an alarm signal depending upon the relative positions of thecams 5|, that is, of the contacts actuated thereby, in the severalstations at the time when the transmitting station 41 is operated. Cam5| is carried on shaft 85 operatively engaged by the keyway shaft 81 ofa combination changing lock 89 which may be of the construction shownin'my prior Patent 2,427,814, September 23, 1947. The shaft 85 and thelock 89 are suitably supported in a casing 9|. The construction andarrangement of the parts in the tour station #45 operable by the lockmay be generally the same as that disclosed in my prior Patent Re.22,864 and in my copending application, Serial No. 594,232, filed May17, 1945, now Patent No. 2,486,439 issued Nov. 1, 1949, which is adivision of the application upon which said Reissue Patent 22,864issued. Certain other parts, however, are included in the lock stationof this invention which perform functions and accomplish purposes notdisclosed in my prior patents and application.

Within the casing 9| of the tour station #45 a key channel 93 is formedby walls 94, 95 cooperating with the casing 9| to provide a channel oflimited dimensions in the cross-section thereof to receive only a whitekey 96 of the set which is utilized for operation of the transmittingstation in Figs. 1 and 2. As shown in Figs. 3 and 4, the key channel 93extends vertically parallel to the backwall of the casing 9| from a slotopening at the upper wall 91 of the casing 9| to and through the bottomwall 98 thereof. Except for retaining mechanism about tc be described, akey dropped in the upper opening would fall through the channellengthwise thereof and drop out at the opening in the bottom wall 93.Pivotally supported on in depending relation to pin 99 fastened inbrackets |0| fixedly supported on the forward Wall 95 of the key channelis a nger carrying member |93. Adjacent the pivot pin 99 this fingercarrying member |03 carries an intercepting bar |95 adjustably fastenedby screws |04 passing through vertically extending slots in fingermember |03. The bar |05 projects from the member |03 through a slot |06cut in the Wall 95 of the key channel 93. The positions of the pivot 99and the bar |05 in relation thereto and of both in relation to the upperwall 91 of the casing 9| are' such with respect to the length of a whitekey 96 (shown in dotted outline in the upper position in Fig. 4)inserted in the key channel 93 at the upper opening thereof that the key96 engages the bar |95 before this key becomes positioned fully withinthe key channel below the wall 91. The lower end |91 of the key 95engages a beveled upper surface of vthe bar |95 pivotally to move themember |93 against the bias of a spring |09 which has a torsion portionthereof wound around the pivot pin 99 and legs H0 engaging thewall 95 ofthe key channel 93 on the opposite side of the pivotal pin 99 to biasthe bar |05 to the position within the slot |05 and within the keychannel.

Adjacent the lower end of the finger carrying member |03 this membercarries a pair of iingers When the member |93 is moved counterclockwisein Fig. 4 under the bias of spring |09 the fingers move toward the rightrespectively to pass through holes ||2 in the forward Wall 95 of the keychannel to intercept the key 95 when it shall have passed by the bar |05and dropped to a position where it may be engaged by the fingers withthe shank of the key extending between these ngers so that the head ofthe key is supported thereby, as shown in the dot and dash outline inFig. 3. This is the position which the key 95 retained in the keychannel takes when the operation of a tour station is completed and thepreviously inserted key has been withdrawn therefrom for operation ofthe next tour station. When another whitel key is inserted in the upperopening of the key channel 93 and the lower end |91 of such other keyengages the bar |95, the iingers will be moved outwardly of the holes H2toward the left in Fig. 4 and the key 99 supported on these fingers maydrop further in the key channel to the'postions shown in the lowerdotted outline, Fig. 3, full lines, Fig. 4,where it will be engaged bymeans about to be described so that it cannot be withdrawn from the keychannel except upon operation of the lock of the tour station in themanner to be described.

Pivotally supported on brackets |5 fastened Yin Fig. 4.

aangaat tothe back'face of the rear wall of the A casing 9| is anauxiliary finger carrying member H1. The member ||'I' is biased to pivotin the -counterclockwise direction i-n Fig. 4 by a spring I I9, having atorsion portion thereof wound upon the supporting pin |26, the ends yofwhich engage respectively the back face of the casing 9| and the)adjacent surface of the auxiliary member I'I at opposite sides of thepivotal pin |29. The member -Ii'I carries a pair of fingers 2| which maypass through holes |23 in the rear wall of the casing 9| to enter thekey channel upon movement of the auxiliary member Ill clockwise againstthe bias of the spring 'l i9. By means to be described 'su-ch clockwisemovement of the auxiliary fingercarrying member |TI is effectedeoncomitantly with movement of the linger of ythe finger carryingImember |93 toward the left as above described, `the fingers l2!intercepting in the lower dotted position in Fig. 3 the key releasedfrom the fingers so as to prevent withdrawal of this key at the loweropening of the key 4channel in the `wall 98. The fingers |2'I may beVformed lwith Ainclined surfaces to conform to the slope of the Ibottomedges ofthe vhead of the particular form of white keys utilized in the.system being described. The end of the shank of this key in this lowerposition may project through this lower opening so that when theauxiliary finger carrying 'member is moved reversely, that is, in thecounterclockwise direction to move the fingers I2| toward the right inFig. '4 out of the 'key channel 93, `the lower key may drop Vfrom theposition where the head thereof is engaged bythe fingers |2| toengagement'with spring retainers 25. These spring retainers |25arefso'formed that pull exerted on the key the head fof' which reststhereon will move the spring members aside sufciently to enable the headof the key without great resistance to pass by these spring retainersinjfrictional engagement therewith vand `-with the rear wall of the keychannel.

For the operation 'of the auxiliary finger carrying 'member v| to movethe fingers |2| thereof into :key intercepting position in the keychannel 93, this member I'I'I is formed with a gooseneck |27 at theupper end thereof which projects through the rear wall of the casing 9|alongside of the key channel, as maybe seen in Figs. 3, 4 and 6. Theretroverted portion of |28 of this gooseneck thus normally is positionedwithin the casing 9| 'and is -engageable 'by a cam finger |29 fastenedupon the shaft 85 as shown in Figs. 3, 5 and 6. Upon rotation of theshaft 85 in the normal operation of the lock forwardly, that is,clockwise in Figs. 3 and 5, the cam finger |29 engages the retrovertedportion |28 of the member Il'! a-nd moves this member counterclockwisein Figs. 4 vand 6 upon the pivot pin |20 against the bias of the springI9. The position of the member 'when so 'actuated by the cam |29 is thatshown in Fig. 6 with the fingers |2| in key intercepting position within.the key channel 93. When the lock is reversely operated, that is,counterclockwise in Figs. 3 and 5 to rotate the cam vfinger |29 back tothe position shown in Fig. 3 from 'that shown in Fig. 5, the vauxiliaryfinger vcarrying memberV II? vis returned under the bias of spring ||9to the position shown Such reverse movement, however, may notV takeplace for reasons which now will be explained until a white key has beeninserted in the upper opening .of the key channel to vactuate thevfinger :carrying member |63 to move clockwise in Fig. '4 against thebias of the spring 169.

To prevent return movement of the cam finger E29 until Va White .key isinserted, a locking cam |3| -is fastened upon the finger carrying member|63 and moves toward the left in Figs. 4 and 6 out of the `path oftravel of the cam nger |29 in the clockwise movement 'of member |33,thus to permit .the return ymove-ment of this cam mger to the lpositionshown in Fig. 3. The form of the lower surface of the'locking cam |3f|in relation to the form of the upper surface, Fig. '6, lof the camfinger 1.29 is such 'that as 'the cam finger |29 -is Arotated clockwisein Fig. '3 in the operation of the lock 89 of lthe tour station thelocking cam |31 is moved 'by the cam finger y|29 toward the left inFigs. 4 and 6, thus moving the fingers I l! out of their position withinthe key channel. In this movement ycam finger '|29 passes above thelocking cam #3| and cannot returnuntil cam |3| is moved out of its path.In the movement of cam A| 3| toward the left, Fig. 4, the key '9Bcarried on the fingers I will lbe released therefrom to fall further'through the key channel. Thus, the key may be released from fingers |'Ieither by insertion of a white key, as above described, or by theinitial operation of the lock. In this upward movement of the cam finger|29 the fingers |2| move into the 'key channel and these fingers |72|are effective to intercept and engage the head of the key in the lowerdotted position shown in Fig. 3, full lines in Fig. 5. As long as thecam finger 129 is 'prevented by 'locking cam 31| from returning inthecounterclockwise direction in Fig. 3 and downwardly vin Fig. 6, the key.is retained by the fingers |2| and may not be withdrawn from the loweropening of the key channel 93.

The spacing of the ingers `|`2| below 'the bar |05 preferably is such inrelation to the length of the key v95 and of fits head that this keywhen released by bar |25 may drop free thereof and stand 'with its'toeupon the head of the key below which is supported lon 'fingers 152|.These positions of the 'keys fare yshown ln Fig. 3 respectively in theupper dotted outline of vkey '93 and in lower dotted outline, Fig. 3,and full line, Fig. 5.

The form of the upper surface yof the .locking cam 13| with respect tothe form of the lower surface of the cam nger |29 in such that the camnger |29 may not'be moved downwardly in Fig. 6, that is,counterclockwise in Fig. 5, to pass the locking cam |9| unless thislocking cam is moved at least part Way toward the left in Fig. 6 towardthe position where it is out of the path of movement of the cam finger|29. This initial movement maybe accomplished by insertion of a whitekey to engage the bar |85. It now will be lunderstood that when the lockof the tour station is operated by a yellow key forwardly to eifect thechange in the combination thereof this lock may not be reverselyoperated until a white key is inserted in the key channel; alsoY thatthe "white keyy w-hich 'has been retained within 'the key channel 93cannot be withdrawn from the channel for insertion in the next tourstation unti1 the white key from the previous tour station is inserted:in the upper opening of the tour Ystation being operated. Preferably'also the yellow keys and the vlock 89 are so formed that the key cannotbe vremoved from the lock S9 except in the initial position, that is,when the cam linger |29 is in the position of Fig. 3. When these stepsof operation have been carried out fthe lw'lfiite key inserted in theupper opening will be conditionedto drop to the positionin which thefingers |||'will engage the head thereofand the white key `which hasbeen retained in the keychannelwill. be released by the spring movementof locking cam |3| toward the left,y Fig. 4, isV produced, downwardmovement of the cam finger |29 brings the bevel surface |33 there of,Fig. 6, into engagement with the bevel surface |35 of the locking cam|3| to produce a further` movement of the locking cam |3| toward theleft concomitantly with movement of the bar |05, Fig. 4, outwardly ofthe slot |06. This will relieve or remove the frictional contact of the.bar |05 with the inserted key 96 to release this key to drop Ainto thespace within the key channel beneath the bar |05, that is, to the upperdotted position,:Fig. 3, resting on the head of the :lower key (dotted)which now is carried by fingers |2| thislower key having reached this,position by virtue of release from fingers in theupward movement ofcaminger |29 or by insertion of the new white key. The inserted key,therefore, cannot `drop below the fingers .I because,

in the-reverse movement of the lock, counterY clockwise, Fig. 3, the camfinger |29 in its downward movementwill pass the locking cam |3||2|,.therefore, supports the upper key 96 until A thengers |/I arebeneath the head of key 96.

In the apparatusof my prior patent Re. 22,864,

the lock station was constructed so that the cam 5| .waslcontinuouslymoved step by step in thev same direction for rotationin thesuccessive operations of the lock. While such a construction maybeutilized, in the embodiment of the invention being described the shaft85 is given a reciprocating angular. movement corresponding to that ofthe keyway shaftv of the lock concomitant with the change in*Y thecombinationV of 4this lock.

Nevertheless, the cam. 5| iseffective to actuate .l

the -contact .53.v to and from `engagement with the contacts and 51 forthe 4purpose of transmitting a routine signal or an alarm signal,v as

the case may be, depending upon the constructionof the tour station asdescribed in connection with stations #42, #45 and-49 of Fig. 2.

.The construction of the tourstation shown in Figs. 3. 4, 5 and 6 issuch that the watchman is not required to` follow ya particular orderwith respect to the initial operation of the lock by the zyellow key inthe. forward direction and the insertion of the white key in the upperopeningof lthe key channe1 93. He maytake either of these initialstepsiirst. If, however, he inserts the, key inthe key channel 93A andpushesV it. downwith its head below the upper opening sov that it cannotagain be withdrawn,

this key. may vbe held by the pressure `ofthe bar..|05 from dropping tothe upper dotted line position, Fig. 3. If thewatchman then operateslthe -lock clockwisa. Fig. 3, Ythe key Vwhich has beenl retained vwithinthekey channel will drop tdengagementwith iingers I| 2| and cannot bewithdrawn from the key channe1 93 at the bottorn opening thereof. Asabove explained, how-A .than vthe width of the slot |41.

ingcam |3| the key 96 will be released from bar |05 and will fall to theposition with its toevresting 'on the head of the retained key, theshank of this retained key projecting from the lower 4 openings of thekey channel. Thus there will be located within the channel 93 two whitekeys. The yellow key also cannot be withdrawn from the lock nor can thelock be reversely operated because of the interference by the lockingcam I |3| Inorder to'secure release of the projecting white key,however, it is merely necessary that the watchman push this projectingkey upwardly,

thereby to push upwardly the key 96 resting thereon until the head ofthis upper key engages the llower beveled surface of the bar |05, asshown in Fig. 4, to move the finger carrying member 'z |03 clockwise andthereby to move the locking cam |3| toward the left sufficiently toenable the surface l|33 of the cam nger |29 to engage the surface |35ofthe locking cam I3I. Reverse movement of the lock, with concomitanteamming action of surfaces |33, |35 to move the locking cam |3| out oithe way, then will become possible to the initial position of the lockin which the .yellow key may be withdrawn therefrom.

In Figs. '1 to 13 inclusive is shown the construction of a magazine,such as the magazine 1 dia.-r

grammatically shown in Figs. 1 and 2. This magazine in the embodiment ofFigs. 7 to 13 inclusive comprises an outer casing |40 upon which ishinged a door |4| which may be provided withV a lock `|43 having a latch|44 engageable With an opening in the side wall of the casing |40, whichopening ymay be covered by a portion |45 of the .door |4| when this dooris in the closeclpositionk 'sothat access may not be had to the latch.ForV the operation of the lock |43 the Watchman may carry a special key.

,By means hereafter described, the door |4| of the outer casing isbiased to open position. This vdoorv is provided with aslot |41 throughwhich projects a pin |49 carried by a member of the internal mechanismof the magazine, this pin being operable in the direction from left toright in Figs- '1 and 8 through a slot |50 in an the pin |49 shallproject through the slot |41 for operation of the magazine. In order toprevent removal of the pin |49 by unsorewing from thev pvotallysupported member IBI, the pin |49 is provided with a flange |52 oflarger diameter venting tampering with the internal devices of'V themagazine and insures operation of the maga-l y zinein the manner aboutto be described only when the door is closed.

As shown in Figs. 8, 9, 10 and 13 the upper wall 5 of the. outer casing|40 is provided with a slot |53 registering vwith a slot |55 in theupper Wall of the shell |5|. Fastened upon the door |4| adjacent theupper edge thereof is a slot closing plate |51 of suiiicient width, asshown in Fig. 9 and as shown in dot and dash outline in Fig. 12, tocover the slots f |53 and `|55 when the door is closed.

The lupper wall of the shell |5| is spaced somewhat from the upper wallof the outer casing |40 :sothat the long leg, Fig. 10, of the plate |51may pass between the casing |40 and the shell |5| in the movement of thedoor between the open and closed, the plate |51 'being moved clearv ofthe slots |53`when the door is open, as shown in Fig. `13. Fastened inthe upper wall of the outer4 This aids in prelcasing- I 40 fandprojecting inwardly thereoffis at stop pin |58 which vengages'the plateV|51and`I lim-its vthe movement thereof in the openingf movement of thedoor, therebyvdeterminingthe open position of the door.

'`||Flr-`1en'Y the lock |43 is'unlocked and, by openlng-'the door |4I,the -plate |51 has been' moved from its. position closingV the slots-|53, |55, thel yellow key carried by the watchman for operationY of the.locks ofthe tour stations VI -of Fig. 1 and tour stations #4L #42; #43;#4.4. and #45 ofF-i'gf. 2may be inserted throughY the slots |53, |55;asshown in Fig. 13,.upon completion of a tour'. lThis keyis insertedbetween the series ofvekeyscontainedin the shell |5I.. of the magazine?andthe member I6 I, whichy is.pivotally :supported .upon a pinI63..carriedin brackets |65 fastened to thev side'. wallsA |66 ofaninner con` tainer. |61 which is. formed so that itmay be in-` serted.inY theshell I51Lthrou-gh Athe bottom of this. shell'which is leftopen. Asshown in Figs. 10A and 11, theinner container |51. also' is open.at the'A top. and Vthis container .and the shell 1 I 5I. are.`inztelescoping relation to.. eachother. The bot-v tom wallof the. innercontainer Island the lower"edges.1|54..of.the.shell |5I.are spaced some-Whatsfrom the bottomV Wall ofthe casing. |40 Ato.l provide space formeans, hereafter described, for preventing withdrawal of akey until themaga zinefisfproperly operated by the insertion of the- 30 yellow key.which.. has been carried .by the watchman in completing the tour. After.the Y innercontainer |61 has been inserted withinV the. shell the pin,|49 may. be. screwed into the..

-pivotedmember |6.Ithe.pin |49..being provided .35

with; a shoulder. |56 bearing. against .the sidefof themember. ISI., asshoWn-.inlFig 7.

It will be understood that the,s1ots.| 53., .I 55 are. located initheupper ,walls respectively ofthe shell I5Land theoutencasing IMLsothatthe end of'ay4 key. I1.|V inserted` therethroughwill extendintoa.

cavity, I13. forn1ed in. the. upper. portion of the pivotedemember. |61-The key. so. inserted .thus may .be ,moved downwardlyinto the. angle.formed by.; the.wa11 of thiscavity andthe upper portion of V-theadjacent key I15lof the seriesof viivekeys., contained withinthemagazine.. Continued pres-.-

sure .on..the .key.v I'lLforcesA it down almost to. the. PQsitiQnShQWnjn Fig. 13, which is effective tore.:` lease the key I 'I1attheopposite end Vof the series. of; fivekeys. Such release is.accomplished under, pressure. referred. to. by the releasev of theVvlowerendor toe of thekey |11 from thepositiorlnv behindl the upturnedbead end- I19..of a v spring` clip Illifastened by. screw. I8 L throughthe `wall i` of; theinner containerintothe horizontal leg :of anppstanding bracke t 83. hereafter furtherdef, scribedg.. Thepressureuponpthe. key |1I'..as.-it@is. inserted brings a downwardpressure vof.theseries of' ffive keys. @n .thespring c1ip |80 Movement, however, ofthey key I 1 1 is resisted by thefriction of. .th' e,end wa1l |85.fastened. tothe she11 |5|, this, Wall in. the particularv embodiment,beingde-, scribA cooperating Withthe side WallsiIIof the, innerontainen|51. to close the key confining; space at a lateraLside. of the innerVcontainer;` Theendfi of the spring c1ip |80; thereby is.moveddownwardly suicientlyrelati've tothe 10W.,- enendrofrthemkey I11.to permit thisvkeyunder the lateral pressure of theintervening, fourkeysto; move toward the left in Figs. YQandl andto bear, against .theend m vWallY I 85, l

Ihe t key |1I inserted in thef magazineacting.. en theinclined surfaceofthe cavity llfmoveslv the ;piyoted member 6 against the., bias .fofthe helical compression` spring-f 81lhaving one fendi.

|61',Vv the other end ofths spring tearing? against? awasher I 88carried on afpin'IBSwhichfis thi-'ea -l' 5 ed atits-left`end inaiidyshoulderedfagainstithef. bottom surface of the countersink inthein""liiber-"l The pinV |89 extendsv througha-fslt II formed 'inth'upstandin'g leg ofthe bracket? .I This pin isl provided 'with ahead|93v-at"thea'ou 10 side-niece of thebr-acket I83i`th`e Washer I88l'bea.ing 'on the Abracket oftheinsid faceiiniertlie-YL pressure offthespring|815A It thusv will be ap'il parent thatfthe spring I81.1is.effectiveto:bias*thel series of keys. to'movetowardthe le'ftinl Figs.y 9'; 115and 13. and that the insertion ofthe keyV` I1Izwill5` compress thespring Ia'k." This spring, upon re-i'!y will' produce. quick movement f'thekey I111intoti." I position. above fthe lowenoneni'ng'v95.1nlthe-bottom of .the innerl container and ISLinatheouter casing.`

When the.l key |11` is imthe..position shown-im Fig. 9..with.the`end'thereof projectingthrough;

the lowervopeninggs:

the openings I95;..|91., it may bewithdrawn from'.

theY magazine. Initially,l however; whennthe irrt. serted key I1|takesqits.; position. in the series. therewill .be six yellow keyswithinthe rnagar-Il` zine, asshown inFig; 13j,..andtl'1e.friction:createthe'shank o'f key. |11 does not immediatelydroza through. theopenings|95., I91.r. Only whenl the@v toward the rightinx.Figs. 7 and. 8.tomovetheia pivoted member I 6 Izagainstfthe biaspf .thesprilllt'l;v

I81isv the, pressureeof this spring |81 upon Jthe."r

seriesV of keys. reducedsufliciently to. permitf the is .necessary',therefore,Y thatthe. watchman: c1ose.l

the Vdoor .of rthe magazine andi operate. the-pin 149i; in. order. to.be ableto Withdrawzfrom thegfseriessfI of keys; the, proper 1y el1ow,'key. for4 operationzoti'. .45 the locks ZUin-.the next-tour; that is,for oivieratiniapIvthesel locks in thecombinationto which .theyihavezflbeen operatedinthetour just completed.

thecontainer I6] move forward toward.-..the;.,r

. 565.1 leasing position between theslopinggside .Wallsgl 99.T providedAby. apiece :bent in '.V formand:,fasteneitgv container I 61; Thesegwalls; |99.- may conform; shown, generally.. oo theesl'iape,4 .of the.head of.. thea.

5 5 key and thdwidth of the. toe thereof. Withdrawal, however, of.' thenext ;yello.w keyV cannot take place in the. embodiment'. of- Figsaj i.

to: 13 inclusive '.untilrthe .door is ;;closed, means-.hef ing! providedfor .closinggthe openings I95,I9J

@Q when the doorisoperr. Cam plate-.20| having auf...

outline asy shownzin Fig.-'12"is mivotallyzsupportedg., onrfpi'n 202;and islbiased :byfspringlhaying ar.. torsion portion wound/-aboutstud201|i the .springe 203,. having one Sieg. thereof r bearing againstAshe-" M cam; plate ..20 I land theoth'or .end thereof Qbearingfr.

againstthe Wall ofcasing 1401:.- Asshownfiniligs.; 9 'and "13, .the camplate 20| .operates-.in the-spacca' between'fthe bottomywallf;offtherin'ner containersv shown: in Fig. 12; whenfthedoor I4I.isclosed the!v ing, pressureof the spring1|81 will tendtqrestraini..allLthese keys. 'againstv .vertical vmovement so. that!1 o., key..| 11to drop throughtheopenings;|95;191;. It...

acca-'42st 206 is relieved and the spring 203 is effective to move thecam plate 20| to the dot and dash position shown in Fig. 12 to cover theopening |91 to prevent withdrawal of the key |11 until the door again isclosed. The spring 203 also acts to bias the door to open position. Forconvenient operation, therefore, the watchman will close the door andlock it in its closed position after in-l serting key |1| in order thathis hands may be free to operate the pin |49 to release the key |11desired for operation of the tour station locks in the next tour. Hecannot, moreover, obtain key |11 until the door is closed.

Such operation of the pin |49 to release the key |11, however, does notcause this key directly to drop from the magazine through the openings|95,A |91. To prevent such occurrence within the inner container |61 andfastened to the side walls thereof are springs 209 having the lowerportions thereof extending diagonally toward the center line of themagazine, as shown in Figs. 10 and 11. When the key |11 is released uponrelieving the pressure of the spring |81 by operating the pin |49 thiskey will drop so that the head thereof, which may be formed as shown inFig. 10 of trapezoidal form, is engaged by the springs 209 and retainedfrom falling through the openings |95, |91 until the watchman is readyto pull it through these openings, the springs 209 yielding laterallyfor this movement. The form and position of springs 209 may be such assuits the form of the yellow key utilized.

It will be understood as shown in Fig. 13 that, when the key |1| isinserted in the slots |53, |55, it must be pushed down so that the upperedge of the head thereof substantially is below the space between theupper wall of the shell and the upper wall of the casing |40 inorderthat the plate |51 may pass over the openings |53 and |55 to theposition fully covering these openings when the door is in closedposition. To insure such full insertion, the upper edge of each key maybe slightly beveled and the edge vof the plate f |51 may becorrespondingly beveled, as shown in Figs. 9 and 13, so that, if theupper edge of the key is not below the upper surface of the shell |5|,the bevel edge of the plate |51 will engage the bevel edge of the key|1| and force this key downwardly suiciently to permit the plate |51 topass, provided the key has been pushed down sufiiciently for suchengagement. Moreover, as the form and arrangement of the cam plate 20|and the bracket 2% cooperating therewith are such that the key 11 cannotbe withdrawnthrough the opening |91 until the door is fully closed withthe bracket 20S pressing upon the cam against the bias of spring v2ll3,as shown in Fig. 12, it will be understood that the key |11 cannot bewithdrawn from the magazine until the key I'H has been inserted in themagazine to such an extent that it cannot thereafter be withdrawntherefrom.

Correspondingly, as the plate |51 covers the openings |53, |55 until asubstantial movement has been given to the door toward its openposition, such movement is effective to permit the cam plate 20| tocover the opening |91 and so prevent undesired withdrawal of a key fromthe series of keys within the magazine before the key |1| is insertedthrough the slots |53, |55.

In utilizing a magazine of the construction shown in Figs. 7 to 13inclusive in a system such as that. described in connection with Figs.l'and 2 and in cooperation with tour stations of the constructiondescribed in: connection with Figs@ '15.;upper end, that is, the head ofthe key .240, beins! 3 to 6 inclusive, it is preferable that the form ofthe keys of the set of yellow'keys which are adapted to be containedwithin the magazine be different from that of the set of white keys foroperating the transmitting station which areinsertable in the keychannel 93 of the tour station. By suitably proportioning these keysserving the two purposes described as to thickness and as to the widthof the head at the top'thereof and by makingV the head different, forexample, rectangular as in Fig. 3 vat thev upper edge and with parallelside edges and sloping bottom.

edges for the white transmitting station keysv and trapezoidal for theyellow keys as in 10 with the widest or base dimension of the trapezoiddifferent from the width of the head of the white key, these widthsbeing suitably chosen with respect to the width of the key channelbetween the lateral walls thereof, it is possible to prevent insertionof a white key in the magazine in such a manner as to effect operationof the magazine and, as well, to prevent insertion of the yellow keys inthe key channel of the tour station in such a way as to effect operationof the tour station for release of a white key therefrom.

In Figs. 14 to 17 inclusive is shown a modification of the key magazineof the invention. This magazine is formed with a casing 2||. Pivotallysupported on a pin 2|3 carried at itsv ends in the front and back wallsof the casing 2|| is a member 2|5 biased by helical spring 2|1 towardthe left in Figs. 14, 15 and 17. The spring 2|1 extends about a pin 2|8rigidly fastened in the upper end of the pivoted member 2|5. The righthand end of the pin 2|8 extends into a recess 2|9 in a guide member 22|fastened in the end wall of the casing 2| a washer 222 being providedbetween the spring 2|1 and the left hand end of the member 22|. Theupper portion of the pivoted member 2|5 is rounded at 223 to providespace for insertion of a key between the set of five keys containedwithin the magazine and the member 2|5. Such insertion is accomplishedthrough a slot 225 in the upper wall of the casing 2| l.

Such insertion, however, can only take place when a cover 221 having anend extension 228 for lifting by hand is moved counterclockwise in Fig.14 pivotally on a bolt 229 supported in the front and back walls of thecasing 2| Lifting of the cover 221 uncovers the slot 225 and alsouncovers a pair of openings 23| in the upper` wall of the casing 2||adjacent the opposite end of the series of keys in the magazine from themember 2|5. The cover 221 carries a pair of fingers 233 shown in Figs.14 and 16 respectively registering with the openings 23|. When the coveris in the closed position, as shown in Fig. 14, these fingers A233extend downwardly within the casing adjacent the wall 235 thereof.Adjacent this wall 235 in the bottom wall 236 of the casing an opening231 is provided for withdrawal from the magazine, for example, of theyellow key for the next tour upon insertion through the slot 225 of theyellow" key which has been used in the tour just completed, asabovedescribed. The action of the set of keys within ther magazine uponinsertion of such key through the slot 225 is similar to that describedin connection with Figs.

7 to 13 inclusive. In the embodiment shown in Figs. 14 to 17 inclusive,however, adjacent the opening 231 the bottom wall 236 of the casing isformed withv a'slightly upturned lip 239. The

emitting station is not provided with a key channel as are the tourstations 250. This key 6 is carried by the watchman to the magazine #21|associated with the first tour station #26| and is inserted in thismagazine to secure withdrawal of another key 2 of the set of keys, thiskey so withdrawn beingutilized to operate this first tour station #26|in the second round or tour. The -series of steps 1s repeated in thesecond tour 1n the manner Just described. The keys Withdrawn as abovedescribed are shown stippled in Fig. 18.

TABLE II Magazine and tour stations Tour #2n/#251 #2v2/#252 #27a/#253#274/#254 #27s/#255 255 253 5 5 1 2 3 4 4 5 5 1 2 3 3 4 5 5 Y 1 2 2 (2)3 (3) 4 (4) 5 (5) 6 (6) 1 Y 2 1 1 2 2 3 3 4 4 5 5 5 1 5 1 v 2 3 4 5 5 51 2 3 4 v4l 5 5 1 v 2 3 3 4 5 6 1 2 2 3 4 5 5 1 yinsertion of the keyindicated in Withdrawn at magazine 255 are used to operate fthetransmitting station 253 and then are inl serted in magazine #21| tobegin the next toun, 75-'mitting stationitselimay serve. as theeighteenth In Table II the numbers in parenthesis, e. g.. (5), indicatesthe keys inserted in the magazine The magazine or station is the keywithdrawn upon The keys It willbe understood from a consideration of thearrangement of the keys in the magazines 25| and 255 of Fig. 18 and bycomparison with Table II that the insertion of a given key in a magazineinsures the withdrawal of a. predetermined key of the set and theinsertion of this Withdrawn key in.the key channel of a tour stationassociated with the vmagazine insures the Withdrawal of a key which maybe inserted in the magazine associated with a succeeding tour stationagain to insure the withdrawal of a predetermined key for operation ofthis next tour station. It also will be apparent from a consideration ofTable II that with five tour-stations as as shown in Fig.'18V andonetransmitting-istation, the cycle of tours is repeated upon thecompletion of six tours utilizing a plurality ofduplicate sets of keyswhich are distributed'in the magazines and in the -tour stations of thesystem. It will be apparent that in the particular embodiment shown inFig. 18 for which Tablev -II shows the successions of keys inserted andWithdrawn, eleven duplicate sets of keys, each set consisting of sixkeys corresponding to the six combinations ofthe combination changinglock,

are required.

` The system shown inFig. 18 is advantageous for conditions reouiringvthe survey by a watchman Where it is diflicult or otherwise disadvan-'tageous to provide for signals to be given at a central oiiice. It'willbe understood from the detailed description of tour stations and themagazines given above that these devices are highly fool proof and thatthe watchman must 'operate the system in the manner described in orderthat he shall always have the proper key for 'the operation of thelocks: of the tour stations and the transmitting station thecombinations of which are changed in each operation.` It will beapparent from inspection of Fig. 18 that the magazines 25| maybe dividedinto two sections and that these sections may be located indifferentlocations on the site or area to be surveyed by the Watchman. Thus. theupper portion of the magazine #21| containing the series of keys 4. 3,2, l. 6 in Fig. 18 may be 1ocated in a separate place from the sectionof this magazine which contains the'series of-keys 5, 4, 3, 2, In suchcases, it is merely necessary that when the key 6 is Withdrawn by theWatchman from the upper section upon insertion of a key 5 therein, hemay carry the key 6 to the second section of the magazine. Uponinsertion of this key 6 in this v.second section, key may be Withdrawnfrom this second section and used in the operation of the associatedtourstation #26| as above described. This. tour station #26| may be at adiierent location' from either of the sections of the magazine, theassociation being that which insures the proper sequence of insertionand Withdrawal of keys' and not necessarilyof adjacency or a mechanicalY connection. The magazine 255 associated with the transmitting station253 may be similarly Y55 divided. Thus, vi5 will be understood that .by

dividing the magazines 25| and 255'in Fig. 1,8, seventeen locations maybe provided for Which the Watchman must visit in making his tour V.inorder that he mayv secure the .proper key for operation of .thetransmitting station. .This

transmitting station may be of any suitable type whichl transmits a.routine signal to a central office or records the operation thereof bysuitable auxiliary devices.; Moreover, this. trans- :operation ofthelock and jreg'uiing adifereiit predetermined" key of' as'et fkeys'for "thn'e'xt 'operation of "the 1ock. Y"Vl/'hetherthe tourdstltnconsists oi a magazine or; a devieefhavi'nga key cbfannel and operablein'the manner above described, thesetouistationsfprovide `means forreleasably' retaining a keywhich isf-adapted to operate the"transmitting `stationf lock to` change the combination thereof. Thetour stations of either type,that is.' the magazine vor the fdevicehaving a key channel, provide means which is aetuatable by a succeedingkey of a` set torelease the retained key so thatv'the successionjmay becarried out fin ythe manner described to-gprovide foij operation f thetransmitting 'station With the key correspondingto the combination towhich its lock -fwas changed 'at the end of the previous tour. Thesystems of the invention, ias above described, moreover, providealcontain'er for a"sup elemental iset of keys iwhich are capable ofoperating ithe lock jof ati least one station of a system. to :changethe `combination thereof, this containing means being actuatable by alkey of the supplementalv set to liberate therefrom a succeeding key ofthis fsupplemental set. In the embodiment of the invention which.utilizes a set of yellow keys supplemental to the set oi"` vyhite*.keyswhich are-adapted to operate the transmitting station, thesupplementalfyellow keysa're different'from the white transmitting station keys.'In' the embodiment 'of Fig. 18,

however, aswell as 'the modification thereof described Wliich utilizesonly the magazines and a transmitting station, the supplemental keys areof the same form, that is,f they are capable of operating the same lock,at least the transmitting station lock; as arey the `keys which arepassed in succession Vthrougl'i the vkey channels of the tourstatio`ns-'Where'the tour stations are provided with locks, this supplementalsetjof keys aswell as the other keys which' are distributed through theEsystem'y are the same, that is, they correspond respectively tothe samecombinations of the lock, so that'all of the locks of the tour :stationsand that of the transmitting station may be alike.

While the system ofthe invention has been described in fourmofdiiications' thereof, other modifications are possible within thescope thereof and other uses may be made of the vdevicesWhichareutilized in the'systems of the invention. Xample, lthe'magazines of `the construction her Figs. 7 to"13 Viri'cliisive or 14-to'17'inive 'may be utilized forcontaining" the differnt keys'of' aset'of "'keysfcorresponding 'to the 'Quintin-anew for a 'leek 'the'combination' ofwhicn ayibe changed. "Suchmag'azi'ne's areu'sefulgiorample, WhereV the locks of' a"rho'tel"or`other 'blic building requireoccasional or frequent 4Kcha-"nge of the YCionibina-tion vthereof inl"ordernto *prevent openingbfv` `doors'*orf'otl'ier 'closures'iby keysretained by guests or others leaving the y premises or the employ of theowners. i ranging in the magazine in the proper order, that is, theorder of the change of thecombinations of the lock, the several keyscorresponding to the By, al1'- different combinations, insertion in themagazine of a key of the set of keys will secure withdrawal therefrom ofthe proper key for the next combination without search through themagazine or trial of the diierent keys to secure the desired key. Insuch use, however, ordinarily the lock on the door or closure would beso constructed that it may be operated by one of thevkeys of the setWithout changing the combinationv in each operation of the lock. Thelock, however, would be constructed so that its combination may bechanged by a master key when such change is desired.

The magazine utilized. for containing such a Aset of keys itself may beprovided with a combi'- nation changing lock operable in succession bythe keys of the set of keys contained therein.

Thus, to secure the next key for operation of the lock of the door ofthe hotel or other closure in the combination to which it is changed bythe master key or otherwise, the key previously used for operating thisdoor lock may be used to kunlock the magazine, for example, of the typeshown in Figs. '7 to 13 inclusive.

After lopening the magazine, this key may be inserted therein asdescribed in connection with Figs. 7 to 13 inclusive to condition thedesired next key for withdrawal therefrom. The magazine may beprovidedwith a lock having a snap latch, as shown in Fig. 7, so that the door ofthe magazine mayy be snapped closed after such insertion andthe desirednext key withdrawn. The combination of the magazine lock will have beenchanged in x the operation thereof to open the magazine and lthus willrequire this next keyjust withdrawn constructed, for example, as shownin Figs. 7 to 13 inclusive may be provided with combination changinglocks. It will be apparentfrom a consideration of Tables I, II and IIIin connection with Figs. 1, 2 and 18, that a key Withdrawn from amagazine for insertion in the key channel of a I tour station or forinsertion in a succeeding magazine insures the withdrawal `of apredetermined key Vfrom such succeeding tour station or magazine. Italso is apparent that the successive combinations to which the keys sowithdrawn correspond progress in regular order. It, therefore, ispossible in the systems of the invention utilizing magazines initiallyto set the combination of the combination changing lock of the magazinefor operation of a given key, for example,

i key 6 withdrawn from tour station #26| to opcrate the lock of magazine#212, this key being inserted in this magazine as above described. Inthe next tour key l which is the next key in order will be withdrawnfrom tour station #26| for insertion in magazine #212 and may beutilizedv for operation oi the lock of magazine #212 to open thismagazine before such insertion and con- Acomitantly to change thecombination of its lock.

Other `uses and other variations from the particular arrangements anddevices Ahereinabove disclosed may be made by those skilled in the art IWhile utilizing the features of the invention which of the next tourstation.

have been summarized above and otherwise disclosed herein. All suchvariations and modifications are Within the scope of the invention andare intended to be covered by the appended claims.

I claim:

l. A watchmans tour system comprising at least one tour station, atransmitting station, at least said transmitting station having a lockprovided with means for changing the combination thereof in eachoperation of the lock and requiring a different predetermined key of aset of keys for the next operation of the lock, means associated withsaid tour station for releasably retaining a key of said set of keys forsaid transmitting station lock and actuatabie by a succeeding key ofsaid set to release said retained key for operation o f said lock ofsaid transmitting station, and means for containing a supplemental setof keys capable of operatingin succession the lock of at least one ofsaid stations to change the combination thereof and actuatable by a keyof said supplemental set to liberate fromsaid containing means asucceeding Akeyyof ysaid supplemental set. y

2. A watchmans tour system comprising a plurality of tour stations, atransmitting station, each of said tour stations having a lock providedwith means for changing the combination thereof in each operation of thelock and requiring a diierentpredetermined key of aiset of keys for thenextoperation of the lock, said transmitting station having a lockprovided with means for changingv the combination thereof in eachoperation of the lock and requiring a different predetermined key of asetof keys for the next operation ofthe lock, means respectivelyassociated with said tour stations for releasably retaining a key ofsaidset of transmitter station keys and actuatable by a succeeding key ofsaid set and upon operation of the Arespective tour station lock torelease said retained key,vand means for containing a supplemental setof keys capable of operating in succession the locks of said` tourstations to change the combination thereof and actuatable by a keyotsaid supplemental set to liberate from said containing means asucceedingkey of said supplemental set for operation I 3. A watchmanstour system comprising a plurality of tour stations, a transmittingstation, said tour stations and said transmitting station each beingprovided with azcornbination changing lock requiring, a diierentpredetermined key for the next operation of the lock, the .locksof saidtour stations being different from said transmitting station lock andrequiring a set of keys for fmental set of keys .capable of yoperatingin succession the locks of said tour stations tov change the combinationthereof and actuatabie by a key `of said supplemental setto liberatefrom said containing means a succeeding key of said supplemental set. ,YV4. A watchmans tour system comprising a bplu.-

`rality ofY tour stations, a transmitting station,

said tour stationsr and said transmitting station eachebeingfprvidedwith Ti' g5 sar 'a combinationfchansing lockl vrequiring ra diierentVpredetermined 'keyf vof "-aset of keys for the next operation. of44 thelock, the locks of said'tour stations and said transmitting stationbeing alike and being adjusted respectively to the combinationscorresponding to 'the-keys of said set of keysgmeans respectivelyassociated with s aid tour stations for releasably retaining a key ofsaid set ofkeys and actuatable by a succeeding key of vsaid set torelease said retained key, and means for containing a duplicate setofkeys capable of operating said locks in successionto change thecombinations thereof and-actuatable by a key of said set of duplicatekeys to liberate from said containing means a succeeding -key of saidduplicate set.

"-A watchmanfs tour system comprising a plurality-of tour stations, atransmitting station, saidtransmitting station having a lock providedlWith means Afor changing the combination there-v of in each operationof the lock and requiring a diiierent-key of a set of keys for the nextoperation ofthe lock, means associated with each of said tourr stationsfor releasably retaining a key vof said set of transmitter station keysand actuatable by a succeeding key of said setto release said retainedkey, said tour stations respectively having locks operable by. a keyland operatively connected to said meansv Afor `releasingfsaid retainedtransmitting stationfkey to effect such release uponvoperationof therespective tour stations, and means containing a supplemental set.ofkeys capable of operating in succession the locks of -said tour stationsand actuatable by a key o f said supplemental set-to liberate from saidcontaining means a succeeding key of said supplemental set'or operationof the next .tour station.

f6.' A Watchmans tour system comprising a A plurality of tour stations,a transmitting station, said tour stations and said transmitting stationeach being provided with a combination changfing lock requiring adifferent predetermined key of at least one set of keys for the nextoperation of the lock, each of said tour stationsbeing constructed witha key channeladapted to receive for passage therethrough in successionthe keys ofv the set of keys required for operation of said transmittingstation, each of said .tour stations being provided with meanscooperating with said key channel vfor releasably retaining atransmitting station key linserted in said channel, each of said tourstations being provided with v means cooperating with said key retainingmeans and with the lock of said tourstation for effecting release of.said retained key upon insertion in said channel off a succeedingtransmitting stathe locks of said tour stations beingalike` and beingdiierent from said ytransmitting station lockand requiring a s et ofkeysl for the successive operations of said tour stationlocks-differentfrom a lset of keys capable of operating in succession the .lockotsaidtransmitting station, means respectivelyassociated with said toursta- 'tionsfor'releasably Vretaining a key of said set f keys for said4transmitting station lock and a c tu atable byra succeeding key of saidseteoftriansmitting Astation keys to release said `retained fkey,vsaid.means being incapable of actuation by akey of said set of tour stationkeys, and means lfor releasably retaining in a predetermined order thekeys of said set of tour station keys and actuatable by g., key of saidset of tour station Ykeys to liberate from said retaining means avsucceeding key of said set of tour station keys.

A Watchmans tour system comprisingna .vplurality. of tour stations, atransmitting station,

saidl transmitting station having a lock provided f With-means forchanging the combination therevvoffineach operationoffthe lock andrequiring; a

different predetermined key of a set of keys-for `the nextoperation ofthe lock, each of said tour stations being constructed with a keychannel adapted to receive for passage therethrough in succession thekeys of said set of transmitting station keys, kmeans in each tourstation -co- .operating with the key channel thereof forreleasactuatable upon insertion in said channel oi' a `succeedingtransmitting station key for effecting Vvrelease-of said retained key,and a magazine for containing a set of keys capable of operating vQsaidtransmitting station lock to change the combination thereof andconstructed to release a transmitting station key for insertion ina-sucneeding tour station channel upon insertion vin said magazine ofthe transmitting stationgkey released from the channel of the precedingltour station.

v9. A watchmans tour system as deiinedv in claim .8 `in which saidmagazine is constructed to contain allexcept one of said set of keys foroperating said transmitting station lock and'for insertion in saidmagazine of only onel key atfa time in a predetermined relation to theother keys-contained therein concomitantly With-liberaan auxiliarystation constructed to be operated by a key of a set of keys capable ofoperating the locks of said tour stations, and means actuated uponoperation of said auxiliary station and operatively connected to saidalarm signal device for operating said alarm signal device.

11. A Watchmans tour system as dened in claim 1 which comprises Varoutine signals-device, and means actuated upon operation of said lockof said transmitting station and -operativelyconnected to said routinesignal for operating said routine signal device.

12. A watchmans tour system as denedin claim 2 which comprises Van alarmsignal device and a routine signal device, an auxiliary stationconstructed to be operated by a key of a setk of `keys for operatingsaid tour station locks, means switch operable from one to the other o ftwo contact positions, va signal device, circuit means connecting saidsignal device to the switch of each

